图18
图19
左栏显示的数据：关键词出现的频数、中心度、年份。（中心度是判断研究领域热点的基本参考值。节点的中心度越高，其连接与传递信息的关键词越多，在整个网络中的媒介作用越强。）如图 20。
Data displayed in the left column: frequency, centrality, and year of keywords. (The centrality is the basic reference value for judging the hot spots in the research field. The higher the centrality of the node, the more keywords it connects and transfers information, and the stronger the media role in the entire network.) Figure 20.
图20
控制面板的调整。调整“threshold”，门槛值调低，可以看到我们的图形里的关键词增多了。根据自己的需要，调整“控制面板阀值控制关键词的数量、大小等指标。如图 21。
Adjustment of the control panel. Adjust the "threshold" to lower the threshold, and we can see that the keywords in our graph have increased. According to your own needs, adjust the "Control Panel Threshold Value" to control the number and size of keywords. See Figure 21.
图21
作者分析。选择“Author”后，点击“go”.如图 22。
Author analysis. After selecting "Author", click "go". As shown in Figure 22.
